Multipoint left ventricular pacing as an addition to cardiac resynchronization therapy: a bridge to the holy grail?
Christos-Konstantinos Antoniou1, Panagiotis Xydis1, Konstantinos Konstantinou1
1First Department of Cardiology, National and Kapodistrian University of Athens, Hippokrateion General Hospital Athens, Greece.
Insights
Multipoint left ventricular pacing (MPP) is explored as an advancement to cardiac resynchronization therapy (CRT) to improve outcomes in heart failure patients who do not respond to conventional biventricular pacing (BVP). This strategy aims to enhance CRT effectiveness for dyssynchronous heart failure.
Area of Science:
- Cardiology
- Biomedical Engineering
- Heart Failure Management
Background:
- Cardiac resynchronization therapy (CRT) is a key treatment for advanced dyssynchronous heart failure (DyssHF).
- A significant portion of patients (up to 40%) exhibit nonresponse or negative response to CRT, limiting its effectiveness.
- Nonresponse to CRT necessitates exploring alternative pacing strategies to improve patient outcomes.
Purpose of the Study:
- To investigate multipoint left ventricular pacing (MPP) as a potential improvement over conventional biventricular pacing (BVP).
- To explore reasons for variable trial results concerning MPP in CRT.
- To identify predictors for enhanced patient benefit from MPP compared to BVP.
Main Methods:
- Review and analysis of existing clinical trial data comparing MPP and BVP.
- Exploration of physiological mechanisms underlying potential differences in pacing efficacy.
- Development of a framework for predicting patient suitability for MPP.
Main Results:
- Divergent trial outcomes highlight the complexity of optimizing CRT response.
- MPP shows potential to improve outcomes in specific patient subgroups unresponsive to BVP.
- Predictive criteria for MPP efficacy are under investigation to personalize therapy.
Conclusions:
- MPP represents a promising advancement in CRT for nonresponding heart failure patients.
- Further research is needed to refine patient selection and optimize MPP delivery.
- Future innovations in CRT may further revolutionize heart failure treatment.
Abstract:
Cardiac resynchronization therapy (CRT) constitutes a cornerstone to the treatment of advanced dyssynchronous heart failure (DyssHF); moreover it represents one of the few instances that a revolutionary approach was pursued, yielding previously unfathomable benefits to patients out of realistic therapeutic options. However, as is rather extensively established, nonresponse, or even negative response, to CRT continue to plague its course, precluding favourable effects in up to 40% of recipients, for a multitude of reasons. Given the scope of the issue of nonresponse, attempts to negate it by means of altering CRT delivery mode, and, more specifically, by introducing multipoint left ventricular pacing (MPP) have been focused on. Possible reasons for divergent trial results will be presented, as well as potential criteria for predicting whether MPP activation may reap additional benefits as compared to conventional biventricular pacing (BVP). Finally, an alternative framework for approaching CRT in general will be put forward, including advancements which in the (near) future may once more revolutionise heart failure treatment.
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